From 3172b239863e1151d85197fdb4ea3e42d421256e Mon Sep 17 00:00:00 2001
From: garhve <git@garhve.com>
Date: Mon, 26 Dec 2022 16:52:29 +0800
Subject: finish chapter 5

---
 .../method/src/main.rs                             | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 rust/theBook/chapter-5-using-struct-to-structure-related-data/method/src/main.rs

(limited to 'rust/theBook/chapter-5-using-struct-to-structure-related-data/method/src/main.rs')

diff --git a/rust/theBook/chapter-5-using-struct-to-structure-related-data/method/src/main.rs b/rust/theBook/chapter-5-using-struct-to-structure-related-data/method/src/main.rs
new file mode 100644
index 0000000..6109e00
--- /dev/null
+++ b/rust/theBook/chapter-5-using-struct-to-structure-related-data/method/src/main.rs
@@ -0,0 +1,54 @@
+#[derive(Debug)]
+struct Rect {
+    height: u32,
+    width: u32,
+}
+
+impl Rect {
+    fn new(size: u32) -> Self {
+        Self {
+            height: size,
+            width: size,
+        }
+    }
+
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+
+    fn can_hold(&self, r2: &Rect) -> bool {
+        if self.height <= r2.width && self.width <= r2.width {
+            return false;
+        }   else {
+            return true;
+        }
+    }
+}
+
+fn main() {
+    let r = Rect {
+        height: 50,
+        width: 30,
+    };
+
+    println!("The area of the rectangle is {} square pixels.", r.area());
+    println!("The r = {:?}",r);
+    dbg!(&r);   // return ownership
+
+
+    let r2 = Rect {
+        height: 40,
+        width: 10,
+    };
+
+    let r3 = Rect {
+        height: 45,
+        width: 60,
+    };
+
+    println!("Can rect1 hold rect2? {}", r.can_hold(&r2));
+    println!("Can rect1 hold rect3? {}", r.can_hold(&r3));
+
+    let r4 = Rect::new(40);
+    println!("{:?}", r4);
+}
-- 
cgit v1.2.3-70-g09d2